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70 Amp Laser Diode Current Source with 336 Watt TEC Controller

  • High Current Laser Diode Driver with TEC  Front Panel
  • LDC-296 Laser Diode Controller Rear Panel
  • LDC-296 High Power Laser Diode Controller Pinout
  • LDC-296 Laser Diode Controller Connectors
  • 70 Amp High Power Laser Diode Controller

sku / item#: LDC-296
ships: 14 to 18 days

Key Features
  • 70 Amp Laser Diode Current Source
  • 336 Watt TEC Temperature Controller
  • Includes CW and QCW Modes
  • Integrated Function Generator for QCW or Remote Trigger
  • RS-232 with LabView Drivers; USB Interface Optional, Inquire for Details
  • Previously Sold as PN: LDC-X250

Price and Delivery Quote

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Select Cables and Accessories for this Controller

This cable is also available terminated on the
controller end with a 15-pin d-sub connector (male) and
15-pin d-sub connector (female) on the device-end (kab-231).

This cable is also available terminated on the
controller end with a 15-pin d-sub connector and
unterminated on the device-end (kab-39).

Technical Questions for this Product


Customers Also Considered:

Why do Scientists & Engineers Choose Laser Lab Source?

PRICE $4369.00
  • Laser Supply Current Range (CW): 0.00 - 70.00 Amps
  • Laser Supply Voltage Range: 5 Volts
  • Laser Current Noise & Ripple (rms): < 1% full scale
  • Laser Current Setpoint Resolution: 18mA
  • Laser Current Setpoint Accuracy: +/- 0.5%
  • Includes Back Facet Monitor Photodiode bias and Measurement
  • Soft-Start Current Ramp Factory Default Set to 300 Milliseconds; User Adjustable
  • User-Programmable Current Limit
  • Temperature Limits (Upper and Lower)
  • Open Circuit Detection; Short Circuit when Laser Diode Current Turned OFF
  • ESD and Power Surge Clamp, AC Line Filter
  • Reverse Voltage Transient Clamp
  • Rear Panel Keylock Switch and Safety Interlock
  • Front Panel e-Stop Button Emergency Shut-Down
  • Internal TEC Output Power: 336 Watts (7 Amps, 48 Volts)
  • TEC Output Current Range (bipolar): ± 7.00 Amps
  • TEC Output Voltage Range (bipolar) : ± 48.00 Volts
  • Temperature Sensor Inputs: 10 kΩ Thermistor, NTC, PT100, PT1000
  • TEC Control Loop Algorithm: Full P.I.D.
  • P.I.D. Variables: User Adjustable to Optimize Temp. Settling Speed
  • TEC Setpoint Resolution: 0.01°C
  • Temperature Range: -25°C to 150°C
  • Factory Set Default Lower Temperature Limit: 5°C
  • Factory Set Default Upper Temperature Limit: 35°C
  • Integrated Function Generator
  • QCW Trigger: Internal or External
  • Rise / Fall Time: < 25μs,10%-90%
  • Pulse Modes: Continuous, Single Pulses, Bursts
  • Modulation Input: BNC, Digital (TTL) or Analog, 10kΩ Impedance
  • ---------------------------------------------------------------------------------------------
  • MODULATION Input Voltage Range: 0 ~ 4 Volts (4V = Max Current)
  • Analog Modulation Bandwidth: 1 Hz – 20 kHz
Auxiliary Functions
  • Temperature Sensor Input: 10kΩ NTC Thermistor
  • External Fan Control Circuit, 1 - 24V, 500mA (max)
  • Pilot Laser Anode, vs. Ground: (5V, 150 mA)
  • Laser-On External LED Indicator: 5mA Output
  • Photodiode Cathode Input, vs. Gnd
USER INTERFACE and Connectors
  • Front Panel: Alphanumeric LCD
  • RS232 Standard
  • USB Optional: $95.00 (Option SVC-USB)
  • LabView Drivers Included
  • Peltier Connector: SubD-15, Female
  • Laser Connector: SubD-5W5, Female
  • RS232 Connector: SubD-9, Female
  • Safety Interlock: Jack Connector, Stereo 3.5mm
  • Power Input: Universal 100V ~ 240 VAC, 50/60 Hz
  • Dimensions: 89 mm (H) x 482 mm (W) x 266 mm (L)
  • Chassis Height: 2U (Standard Rack-Mount Units)
Recommended Accessories
  • kab-39 Unterminated Connecting Cable -or-
    kab-231 Terminated Connecting Cable
  • kab-141 Power Cable, 80 Amp: Sub-D5W5 (male) - Cable Lugs
  • acc-417 USB-RS232 Converter

Product Overview:

70 Amp Laser Diode Current Source with 336 Watt TEC Controller

The LDC-296 can drive full CW power up to 70 Amps, and the integrated function generator can be programmed to generate QCW pulses from 25 microseconds to CW. The QCW pulse mode feature is capable of delivering continuous pulses, single pulses, and pulse bursts which are internally or externally triggered.

Customized Protection for High Power Laser Bars and Arrays
These current sources feature multiple levels of built-in laser diode protection which have been optimized for bars and arrays. One of the unique features is a user programmable soft-start ramp of the bias current to the device under test. The factory sets the ramp time to 300 milliseconds as a default, but the user can adjust this time period from 1 millisecond up to 10's of seconds. This current ramp up and down function is designed to protect the laser from thermal shock during power up and down sequences.

The LDC-296 also offers features such as current limit, a brown-out and black-out power surge clamp, AC line filters, and a fast response to shunt the current in the event of an open circuit. There is an interlock safety connection as well as a front panel Emergency-Stop kill switch to ensure the laser is operated only when the user has determined it is safe to do so.

High Power Thermoelectric Cooler Features

The LDC-296 includes a powerful 336 watt bipolar-output TEC controller, with thoughtfully designed safety features to protect your laser investment.
  • Output to drive an external cooling fan, capable of supplying up to 500 mA at 24 V.
  • Laser Temperature limits are user-programmed via the TEC controller will switch off the laser current if the temperature falls outside the limits.
  • High Speed Precision PID TEC Control Loop for Fast Temperature Settling and Milli-Degree Stability.

  • Controller Power Interface

    The LDC-296 utilizes high current DSUB-5W5 style connector on the rear panel for the laser.

    A 15-pin D-sub connector is included for the TEC connections and ancillary control functions, including external photodiode measurement, Laser-On Indicator LED, temperature sensor input, and an external cooling fan control.

    Laser Driver Control User Interface

    The LDC-296 front-panel controls provide fast and simple setup, and an RS232 interface with LabView drivers is included standard. The LabView GUI makes set-up and control of the system fast and simple. An optional USB digital interface is available; inquire for details on ordering the USB control option.

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